Monitor display



FIG. 1 is a top, front, right perspective view of a monitor display showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof; and,

FIG. 4 is a top plan view thereof.

Broken lines shown in the drawings illustrate portions of the monitor display and form no part of the claimed design. Dot-dash broken lines form boundaries of, but not included in, the claimed design. 

The ornamental design for a monitor display, as shown and described. 